Spray tank



FIG. 1 is a front perspective view of a spray tank;

FIG. 2 is a front view of the spray tank;

FIG. 3 is a back view of the spray tank;

FIG. 4 is a left side view of the spray tank;

FIG. 5 is a right side view of the spray tank;

FIG. 6 is a top view of the spray tank; and,

FIG. 7 is a bottom view of the spray tank.

CLAIM The ornamental design for a spray tank, as shown and described.